After upgrading to MonoTouch 6.0.4 I am getting the following exception when
I try to create an instance of a navigation controller in FinishedLaunching.
*The error appears when deploying my app on iPhone running iOS 4.3* . It
runs fine in iOS 5 and iOS 6.
MonoTouch.Foundation.MonoTouchException: Objective-C exception thrown.
Name: NSInvalidArgumentException Reason: -[NSConcreteHashTable
objectAtIndex:]: unrecognized selector sent to instance 0x685550
at MonoTouch.Foundation.NSArray.ArrayFromHandle[UIViewController] (IntPtr
handle) [0x00000] in <filename unknown>:0
at MonoTouch.UIKit.UIViewController.get_ChildViewControllers () [0x00008]
in
/Developer/MonoTouch/Source/monotouch/src/UIKit/UIViewController.g.cs:1744
at MonoTouch.UIKit.UINavigationController.get_ViewControllers () [0x0002e]
in
/Developer/MonoTouch/Source/monotouch/src/UIKit/UINavigationController.g.cs:325
at MonoTouch.UIKit.UINavigationController..ctor
(MonoTouch.UIKit.UIViewController rootViewController) [0x00049] in
/Developer/MonoTouch/Source/monotouch/src/UIKit/UINavigationController.g.cs:162
at test.AppDelegate.FinishedLaunching (MonoTouch.UIKit.UIApplication app,
MonoTouch.Foundation.NSDictionary options) [0x00020] in
/Users/yiannis/Projects/test/test/AppDelegate.cs:40
at MonoTouch.UIKit.UIApplication.Main (System.String[] args, System.String
principalClassName, System.String delegateClassName) [0x0004c] in
/Developer/MonoTouch/Source/monotouch/src/UIKit/UIApplication.cs:38
at test.Application.Main (System.String[] args) [0x00000] in
/Users/yiannis/Projects/test/test/Main.cs:17
To reproduce this issue create an empty monotouch project, and add the
following code to the AppDelegate file:
UIViewController viewController;
UINavigationController nav;
public override bool FinishedLaunching (UIApplication app,
NSDictionary
options)
{
// create a new window instance based on the screen size
window = new UIWindow (UIScreen.MainScreen.Bounds);
viewController = new UIViewController();
nav = new UINavigationController(viewController);
window.RootViewController = nav;
// make the window visible
window.MakeKeyAndVisible ();
return true;
}
Debug the above project in iOS 4.3 . Hopefully the error should appear and
the app will crash
--
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